Physics Exam Practice

2 women push a stalled car, each exerting a force of 498 N. If the mass of the car is 1680 kg, determine its acceleration.

• 0.583 m/s²

• 0.296 m/s²

• 0.889 m/s²

• 1.687 m/s²

• 3.373 m/s²

2. A stalled van is pushed with an acceleration of the van is 0.422 m/s² from resting. What is its final velocity after being pushed for 12 seconds?

• 2. 5.064 m/s

• 60.77 m/s

• 0.0351 m/s

• 0.01484 m/s

A battery-powered torch transform chemical energy into what energy?

• Electrical

• Thermal

• Light

• Sound

• Kinetic

What is the energy transformation in this picture?

• Electrical > Sound

• Chemical > Kinetic

• Chemical > Light

• Electrical > Light

• Electrical > Kinetic

What is the energy transformation in this picture?

• Electrical > Sound

• Chemical > Kinetic

• Chemical > Light

• Electrical > Light

• Electrical > Kinetic

Kelvin takes off an airplane with a force of 167823 N and reaches a velocity of 842 km/h in 30 seconds. What is the mass of the plane?

• 21890 kg

• 22880 kg

• 20890 kg

• 19990 kg

• 19980 kg

James with a mass of 58 kg is riding a sled with a mass of 82 kg on an ice lake. After the sled is pushed, it stops after travelling 24 m for 10 seconds. What would be the magnitude and direction of the stopping force? (Let's say right is positive and left is negative)

• Magnitude: -33.6
  Direction: Right

• Magnitude: -33.6
  Direction: Left

• Magnitude: 67.2
  Direction: Right

• Magnitude: 67.2
  Direction: Left

Explain the energy transformations in the diagram.

A wagon with a mass of 73.4 kg is pulled by Chaim the Alpha Wolf with a force of 190.84 N. Calculate the acceleration.

• 2.6 m/s²

• 0.385 m/s²

• 0.26 m/s²

• 3.85 m/s²

A 80 kg wagon is let loose and is freely rolling until it stops after travelling 19.8 meters for 9 seconds. Calculate is the frictional force stopping the wagon.

• • - 39.11 N

• • 39.11 N

• • - 3.911 N

• 3.911 N